dev/tsunami_io.hh

   1 /*
   2  * Copyright (c) 2003 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /* @file
  30  * Tsunnami Fake DMA memory map
  31  */
  32
  33 #ifndef __TSUNAMI_DMA_HH__
  34 #define __TSUNAMI_DMA_HH__
  35
  36 #include "mem/functional_mem/mmap_device.hh"
  37 #include "dev/tsunami.hh"
  38
  39 /*
  40  * Tsunami I/O device
  41  */
  42 class TsunamiIO : public MmapDevice
  43 {
  44
  45   public:
  46
  47   protected:
  48
  49     class ClockEvent : public Event
  50     {
  51         protected:
  52             Tick interval;
  53             uint8_t mode;
  54             uint8_t status;
  55
  56         public:
  57             ClockEvent();
  58
  59             virtual void process();
  60             virtual const char *description();
  61             void Program(int count);
  62             void ChangeMode(uint8_t mode);
  63             uint8_t Status();
  64
  65     };
  66
  67
  68       uint8_t mask1;
  69       uint8_t mask2;
  70       uint8_t mode1;
  71       uint8_t mode2;
  72
  73       ClockEvent timer0;
  74       ClockEvent timer1;
  75       ClockEvent timer2;
  76
  77       uint32_t timerData;
  78
  79   public:
  80     TsunamiIO(const std::string &name, /*Tsunami *t,*/
  81                Addr addr, Addr mask, MemoryController *mmu);
  82
  83     virtual Fault read(MemReqPtr req, uint8_t *data);
  84     virtual Fault write(MemReqPtr req, const uint8_t *data);
  85
  86     virtual void serialize(std::ostream &os);
  87     virtual void unserialize(Checkpoint *cp, const std::string &section);
  88 };
  89
  90 #endif // __TSUNAMI_IO_HH__